Politics and government History 1,268 Economic conditions 759 Social conditions 676 Foreign relations 522 Biography 353 Economic policy 276 Political parties 266 Communism 190 Periodicals 169 Sources 164 Political science 142 Constitutional history 133 Socialism 129 Colonies 117 Nationalism 116 Elections 114 Political activity 111 Statesmen 104 Democracy 100 Presidents 97 Social policy 82 Public administration 80 Congresses 79 Social life and customs 79 World politics 78 Description and travel 72 World War, 1939-1945 72 Politicians 70 Race relations 70